These ingots are made of 99.9%+ new clean lead. You will receive a mix of 1/2 and 1 pound ingots to achieve the total weight of your order. The 1 pounds ingots measure approximately"x1"x1/2" Triangle in shape, OR 3" x 1-3/8" x 7/8" and the 1/2 pounds ingots are 3" x 3/4" x 7/8". The ingots are easy to melt and great for casting bullets and fishing weights. The Brinell Hardness scale of 99.9% Lead is approximately 5.